/*
 * Tencent is pleased to support the open source community by making BK-CI 蓝鲸持续集成平台 available.
 *
 * Copyright (C) 2022 Tencent. All rights reserved.
 *
 * BK-CI 蓝鲸持续集成平台 is licensed under the MIT license.
 *
 * A copy of the MIT License is included in this file.
 *
 *
 * Terms of the MIT License:
 * ---------------------------------------------------
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
 * documentation files (the "Software"), to deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all copies or substantial portions of
 * the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
 * LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
 * NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

package com.tencent.bkrepo.job.batch.task.stat

import com.tencent.bkrepo.common.mongo.constant.ID
import com.tencent.bkrepo.common.mongo.constant.MIN_OBJECT_ID
import com.tencent.bkrepo.job.batch.task.stat.StatBaseJob.Companion.COLLECTION_NODE_PREFIX
import com.tencent.bkrepo.job.batch.utils.MongoShardingUtils
import com.tencent.bkrepo.job.pojo.stat.StatNode
import com.tencent.bkrepo.job.separation.service.SeparationTaskService
import org.bson.types.ObjectId
import org.springframework.data.domain.Sort
import org.springframework.data.mongodb.core.MongoTemplate
import org.springframework.data.mongodb.core.find
import org.springframework.data.mongodb.core.query.Criteria
import org.springframework.data.mongodb.core.query.Query

open class SeparationStatBaseJob(
    private val mongoTemplate: MongoTemplate,
    private val separationTaskService: SeparationTaskService,
) {


    fun processSeparationQuery(
        projectId: String,
        criteria: Criteria,
        batchSize: Int,
        processor: (StatNode) -> Unit,
        shouldRun: Boolean,
    ) {
        val collectionList = separationTaskService.findSeparationCollectionList(projectId)
        collectionList.forEach {
            processPagedQuery(it, criteria, batchSize, processor, shouldRun)
        }
    }


    /**
     * 通用分页查询处理方法
     */
    private fun processPagedQuery(
        collectionName: String,
        criteria: Criteria,
        batchSize: Int,
        processor: (StatNode) -> Unit,
        shouldRun: Boolean,
    ) {
        var lastId = ObjectId(MIN_OBJECT_ID)
        var processedCount = 0L
        do {
            val query = Query(criteria)
                .addCriteria(Criteria.where(ID).gt(lastId))
                .limit(batchSize)
                .with(Sort.by(ID).ascending())

            val datas = mongoTemplate.find<StatNode>(query, collectionName)
            if (datas.isEmpty()) break
            datas.forEach { data ->
                processor(data)
            }
            processedCount += datas.size
            lastId = ObjectId(datas.last().id)
        } while (datas.size == batchSize && shouldRun)
    }

    fun buildSeparationProjectList(): Map<String, Set<String>> {
        val separationProjects = mutableMapOf<String, MutableSet<String>>()
        separationTaskService.findProjectList().forEach { projectId ->
            val collectionName = COLLECTION_NODE_PREFIX +
                    MongoShardingUtils.shardingSequence(projectId, com.tencent.bkrepo.job.SHARDING_COUNT)
            separationProjects.getOrPut(collectionName) { mutableSetOf() }.add(projectId)
        }
        return separationProjects
    }
}